645237010 has 32 divisors (see below), whose sum is σ = 1269126144. Its totient is φ = 234240000.

The previous prime is 645236993. The next prime is 645237029. The reversal of 645237010 is 10732546.

It is a self number, because there is not a number n which added to its sum of digits gives 645237010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65935 + ... + 75085.

It is an arithmetic number, because the mean of its divisors is an integer number (39660192).

Almost surely, 2^645237010 is an apocalyptic number.

645237010 is a deficient number, since it is larger than the sum of its proper divisors (623889134).

645237010 is a wasteful number, since it uses less digits than its factorization.

645237010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 645237010 is about 25401.5158996466. The cubic root of 645237010 is about 864.1180760338.

Adding to 645237010 its reverse (10732546), we get a palindrome (655969556).

The spelling of 645237010 in words is "six hundred forty-five million, two hundred thirty-seven thousand, ten".